Fireproof structure.



U PATENTE-D001'. 1a, 1903. N. POULSONy PIREPROQF STRUCTURE.

APPLICATION FILED MAR. 1. 1902 No MODEL.

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vatented october 13, 190e. y' y PATENT Ormea.

NIELs PoULsoN, on'BRooKLYN, NEWY YORK.

FIREPROF` STRUCVTU RE.

SPECIFICATION forming part of Letters Patent No. 741,544, dated October 13, 1903. Application filed March 1, 1902. Serial No. 96,308. (No model.)

To @ZZ whom t may concern:

Be it known that I, NInLs Pounsomof 11S North Eleventh street, Brooklyn, New York,

have invented a new and useful Improved Finish for Buildings, of which the following is a specification.

My improvement relates,primarily,to building structures o f a fireproof character, and particularly" to what is termed the finish material of buildings-that, is, to the part -constituting theframes of the windows and in the 'accompanying drawings, in which- Figure l is a side View of a window with a frame embodying my invention. .'Fig. 2 is an enlarged longitudinal sectional view on the line X X, Fig. 1. Fig. 3 is a transverse sectional view on the lineY Y, Fig. 2, with a .part broken away.

In carrying out my invention I first produce a supporting-strip, which may be solid, as in Fig. 2, showing the lintel and sill of a window, or hollow, as in Fig. 3, showing. one of the side pieces. The strip, whatever its form,consis ts of a ireproofcomposition capable of being sawed, cut, and of receiving and retaining screws like wood and of being first brought to a plasticvcondition and molded or shaped and then hardened, forming a tough, stiff, but comparatively lightl and inexpensivestrip. While different compositions may be used, I prefer to use a composition of earthy and brous materials, as mineral wool, asbestos, or excelsior or other woody fibers, and oxidrand chlorid of manganese in desired proportions to `make a paste Vwhich will set andV harden to'form a strip having the characteristics above described. This strip constitutes the foundation or supporting-strip of the improved builders finish and has c0111- bined .therewith guide abutting or parting pieces or beads, which, as shown, are for use with sliding sashes. These pieces/t' are formed by bending a strip of metal to form ahollow member t" with .a rib or ribsfnm and is lled with a composition, preferably the same as that which constitutes the supporting-strip,V

and is secured to the face of-the supportingstrip by screws, as indicated by dotted lines. As thus constructed with guide or parting ribs or beads of any suitable form the finish.-

ing-strip may be used like one of wood for I 4as it will not bend under heat and is absolutely incombustible. The capacity to receive and retain screws permits the ready attachment of the ribs and otherl parts by screws, thus avoiding the difficulties incident to structures made of metal, which have to be bolted -or bored or tapped.

While for some purposes the supportingstrip may be solid, it is better in othercases to make it hollow, as I have found that this prevents any tendency to twist or warp from any cause.

. I have illustrated a window-frame having .sashes of hollowmetal containing a lle'r, but

do not here claim the sam-e, nor do I claim the construction of the guide-strips of'metal with a non-combustible filler, the samebeing the subject-matter of claims in my applications Serial Nos. 133,7 66 and 155,359.

Without limiting myself to the form and construction shown, I claim- 1 1. A reproof finish for building consisting of a strip of fireproof composition capable of receiving and retaining screws combined with parting or guiding ribs screwed to the face of the strip, substantially as set forth.

2. A Iireproof finish for building consisting of a hollow supporting-strip of ireproof composition capable of receiving and retaining screws combined with parting or guiding ribs screwed to the face of the strip, substantially as set forth. 4

3. A tireproof finish for building consisting of a strip of tireproof composition capable of receiving and retaining screws combined with the face of the supporting-strip, substantially Io parting or guiding ribs, consisting of bent as set forth.

metal strips each containing a flreproof filler In testimony whereof I have signed my secured to the face of said supporting-strip, name to this speoication in the presence of 5 substantially as set forth. two subscribing witnesses.

4. The combination with the supporting- NIELS POULSON. strip of a frame, of a. guide consisting of a Witnesses: metallic strip bent to form longitudinal ribs, H. G. OGDEN, Jr.,

containing a reproof filler and connected to HENRY C. GARRETSON. 

